Verbo regular: straighten - straightened - straightened
Afirmación
Forma simple
I must straighten you must straighten he must straighten we must straighten you must straighten they must straighten
Forma con V-ing
I must be straightening you must be straightening he must be straightening we must be straightening you must be straightening they must be straightening
Perfecto
I must have straightened you must have straightened he must have straightened we must have straightened you must have straightened they must have straightened
Perfecto con V-ing
I must have been straightening you must have been straightening he must have been straightening we must have been straightening you must have been straightening they must have been straightening
Negación
Forma simple
I mustn't straighten you mustn't straighten he mustn't straighten we mustn't straighten you mustn't straighten they mustn't straighten
Forma con V-ing
I mustn't be straightening you mustn't be straightening he mustn't be straightening we mustn't be straightening you mustn't be straightening they mustn't be straightening
Perfecto
I mustn't have straightened you mustn't have straightened he mustn't have straightened we mustn't have straightened you mustn't have straightened they mustn't have straightened
Perfecto con V-ing
I mustn't have been straightening you mustn't have been straightening he mustn't have been straightening we mustn't have been straightening you mustn't have been straightening they mustn't have been straightening
Forma interrogativa
Forma simple
must I straighten? must you straighten? must he straighten? must we straighten? must you straighten? must they straighten?
Forma con V-ing
must I be straightening? must you be straightening? must he be straightening? must we be straightening? must you be straightening? must they be straightening?
Perfecto
must I have straightened? must you have straightened? must he have straightened? must we have straightened? must you have straightened? must they have straightened?
Perfecto con V-ing
must I have been straightening? must you have been straightening? must he have been straightening? must we have been straightening? must you have been straightening? must they have been straightening?
Forma interro-negativa
Forma simple
mustn't I straighten? mustn't you straighten? mustn't he straighten? mustn't we straighten? mustn't you straighten? mustn't they straighten?
Forma con V-ing
mustn't I be straightening? mustn't you be straightening? mustn't he be straightening? mustn't we be straightening? mustn't you be straightening? mustn't they be straightening?
Perfecto
mustn't I have straightened? mustn't you have straightened? mustn't he have straightened? mustn't we have straightened? mustn't you have straightened? mustn't they have straightened?
Perfecto con V-ing
mustn't I have been straightening? mustn't you have been straightening? mustn't he have been straightening? mustn't we have been straightening? mustn't you have been straightening? mustn't they have been straightening?